When you plug your engine block heater into our unit it will automatically control not only WHEN the engine block heateractivates but also atwhat outdoor temperature it will switch on and off.

For example if you need to leave for work at 6:00 a.m. simply set the timer to start at 4:00 a.m. and set the thermostat to activate at 32 degrees. (32 degrees should be the standard setting) Both these settings are customizable by you, the user.

If the temperature outside is above 32 degrees at 4:00 a.m then the heater will not activate; saving you money.

This product must be used with an existing engine block heater (standard in all diesel vehicles. Optional in some gasoline vehicles)

This product is constructed of high quality materials, time tested by known and trusted manufactures and carries a One YearWarranty, free of charge.